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5,5alphabeta,13,13alphabeta-tetrahydro-5beta,13beta - dihydroxy-8h,16h-7alpha,15alpha - epidithio-7h-15h-bisoxepino-(3'4':4,5)pyrrolo(1,2-a:1',2'-d)-pyrazine - 7,15-dione,diacetate and production thereof using aspergillus terreus

US 3,701,774 A · Inventors: MILLER PHILIP ANDREW et al.

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Why it's free to use

  • Granted October 31, 1972. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 31, 1989.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 2, 1968
GrantedOctober 31, 1972
Term endedOctober 31, 1989
Application number—
Classification (CPC)C07D513/22 +1 more
Length4 pages

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Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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